AMD EPYC 4545P vs Intel Core Ultra 7 265KF Comparison

Head-to-Head Benchmarks

The Intel Core Ultra 7 265KF dominates the AMD EPYC 4545P in nearly every recorded benchmark, winning 16 of 17 head-to-head comparisons. The single exception is PassMark integer math, where the AMD EPYC 4545P posts a decisive 213485 score versus 143351 for the Intel part, a 48.9% advantage. This is the only workload in the entire database comparison where the EPYC pulls ahead, and it does so by a wide margin.

Across the Cinebench suite, the Intel chip wins each of the six tests by a consistent margin. In Cinebench R15 multicore, the Intel scores 5013 against 4745, a 5.3% lead. The single-core result mirrors this: 707 versus 669, a 5.4% gap. Cinebench R20 shows the same pattern, with Intel leading multicore 20889 to 19773 and single-core 2948 to 2791, both at 5.3%. Cinebench R23 follows: 49736 to 47079 multicore and 7021 to 6646 single-core, again at -5.3% for AMD.

The PassMark suite reveals where the Intel processor stretches its advantage. The largest margin outside of integer math is in floating-point operations: Intel scores 189431 versus 126505, a 33.2% lead. Prime number finding shows an even bigger relative gap: Intel scores 486 versus 292, which is 39.9% ahead. Extended instructions favor Intel by 15.2% (54513 vs 46231), while data encryption shows a 22% lead (48198 vs 37598). Data compression is closer, with Intel at 666589 versus 636279, only 4.5% ahead.

The overall multithread score in PassMark gives Intel an 8.6% lead, 58518 to 53504, while PassMark physics shows 3633 versus 3260, a 10.3% edge. Random string sorting also goes Intel's way, 79735 to 73850, a 7.4% margin. The single-thread PassMark score of 4928 versus 4318 translates to a 12.4% lead for Intel.

Architecture Differences

The two processors come from fundamentally different design philosophies. The AMD EPYC 4545P uses the Zen 5 architecture, codenamed Grado, built on a 4 nm TSMC process with a die size reported as 2x 70.6 mm². It contains 16 cores and 32 threads, with a base clock of 3.00 GHz and a boost clock of 5.40 GHz. The Intel Core Ultra 7 265KF uses the Arrow Lake architecture, codenamed Arrow Lake-S, on a 3 nm TSMC process with a 243 mm² die. It contains 20 cores and 20 threads, meaning no hyperthreading, with a base clock of 3.90 GHz and a boost clock of 5.50 GHz.

Cache structures differ substantially. The AMD part allocates 80 KB of L1 per core, 1 MB of L2 per core, and a shared 64 MB L3 pool. Intel provides 192 KB of L1 per core, 3 MB of L2 per core, and a shared 30 MB L3. The larger L3 on the AMD side may help in certain multi-threaded server workloads, but the benchmark data shows Intel's higher per-core clocks and broader core count winning most tests.

Memory support is DDR5 for both, with dual-channel buses. AMD lists memory bandwidth at 89.6 GB/s and supports ECC memory, while Intel lists 102.4 GB/s and does not support ECC. PCIe connectivity: AMD provides 24 lanes of Gen 5 (CPU only), Intel provides 20 lanes of Gen 5. The AMD chip includes integrated Radeon Graphics, whereas the Intel part has no integrated graphics (listed as N/A). The AMD is a server/workstation part on AMD Socket AM5, while the Intel is a desktop part on Intel Socket 1851. The Intel has an unlocked multiplier; the AMD does not.

Where Each One Wins

The AMD EPYC 4545P wins exactly one benchmark: PassMark integer math. With a score of 213485 versus 143351, it is a clean 48.9% ahead. This indicates that integer-heavy calculations, such as encryption or certain database operations, can favor the AMD part. However, no other benchmark shows AMD ahead. For all other tasks, the Intel Core Ultra 7 265KF takes the lead.

The Intel wins all Cinebench tests, including single-core and multicore, by a consistent 5.3% to 5.4% margin. This suggests that for rendering, video encoding, and 3D modeling workloads that scale with thread count, the Intel chip provides a small but consistent edge. The Intel also wins all PassMark tests except integer math, with particularly large margins in floating-point math (33.2% ahead), prime number finding (39.9% ahead), and encryption (15.4% ahead). These results point to the Intel being more effective for scientific computing, data encryption, and any instruction-heavy general-purpose tasks.

In single-threaded performance, the Intel leads by 12.4% in the PassMark single-thread test and by 5.3% in Cinebench R23 single-core. This translates to better responsiveness in lightly threaded software, such as many games and older applications. The multithread PassMark score also goes to Intel by 8.6%, though the AMD's larger L3 cache (64 MB vs 30 MB) does not appear to translate into a win in any of the recorded benchmarks.

The AMD's one win in integer math is a narrow but real advantage. For workloads like integer-heavy hashing or certain compression algorithms that rely on integer operations, the AMD part could be a better fit. The data also shows the AMD has a lower TDP (65 W vs 125 W), but that is a spec, not a benchmark result. The actual performance per watt cannot be derived from these numbers alone.

Specification Differences

The following specifications differ between the two processors:

• Cores: AMD has 16, Intel has 20. Threads: AMD has 32, Intel has 20 (no hyperthreading).
• Base Clock: AMD 3.00 GHz, Intel 3.90 GHz. Boost Clock: AMD 5.40 GHz, Intel 5.50 GHz.
• TDP: AMD 65 W, Intel 125 W.
• Process Node: AMD 4 nm, Intel 3 nm. Die Size: AMD 2x 70.6 mm², Intel 243 mm².
• L1 Cache: AMD 80 KB per core, Intel 192 KB per core. L2: AMD 1 MB per core, Intel 3 MB per core. L3: AMD 64 MB, Intel 30 MB.
• Memory Bandwidth: AMD 89.6 GB/s, Intel 102.4 GB/s.
• ECC Memory: AMD true, Intel false.
• PCIe Lanes: AMD Gen 5, 24 lanes (CPU only), Intel Gen 5, 20 lanes.
• Integrated Graphics: AMD Radeon Graphics, Intel N/A.
• Market Segment: AMD Server/Workstation, Intel Desktop.
• Release Date: AMD 2025-05-12, Intel 2024-10-23.
• Launch MSRP: AMD ``$549``, Intel ``$379`` (stated once as launch MSRP).
• Unlocked Multiplier: AMD false, Intel true.
• Part Number: AMD 100-000001764, Intel SRQCU.

FAQ

Q: Which processor is faster in single-core performance?

A: The Intel Core Ultra 7 265KF wins every single-core test. In Cinebench R23 single-core, it scores 4521 vs 6646, a 5.3% lead. In PassMark single-thread, it scores 7358 vs 4318, a 12.4% lead.

Q: Does the AMD EPYC 4545P win any benchmark?

A: Yes, it wins PassMark integer math with a score of 213485 and gains a 48.9% over the Intel's 143351. All other 16 head-to-head tests are won by the Intel.

Q: What is the L3 cache difference?

A: The AMD has a 64 MB L3 cache, while the Intel has a 30 MB shared L3. The AMD's cache is larger, but it does not translate to a win in the recorded benchmarks.

Q: Does the Intel have more threads than the AMD?

A: No, the AMD has 32 threads, while the Intel has 20 threads. The Intel compensates with more physical cores (20 vs 16) and higher boost clocks.

Q: What is the memory bandwidth difference?

A: The Intel lists a memory bandwidth of 102.4 GB/s, while the AMD lists 89.6 GB/s. Both support DDR5 memory.

Q: Does the AMD have integrated graphics?

A: Yes, the AMD EPYC 4545P includes Radeon Graphics. The Intel Core Ultra 7 265KF has no integrated graphics (N/A).

The Verdict

The Intel Core Ultra 7 265KF is the superior processor in the recorded benchmark data, winning 16 out of 17 head-to-head comparisons. It holds a consistent 5.3% lead across all Cinebench tests, a 12.4% lead in PassMark single-thread, and massive margins in floating-point math (33.2%), prime number finding (39.9%), and encryption (22%). Its higher base clock (3.90 GHz vs 3.00 GHz), higher boost clock (5.50 GHz vs 5.40 GHz), and larger L2 cache (3 MB per core vs 1 MB) all contribute to the measured wins. The Intel also has an unlocked multiplier for overclocking, a feature the AMD lacks.

The AMD EPYC 4545P has only one clear win: integer math, where it performs 48.9% higher than the Intel. It also brings ECC memory support, a lower TDP (65 W vs 125 W), 64 MB of L3 cache, and integrated Radeon Graphics. For server or workstation tasks that require ECC memory and integer-heavy arithmetic, the AMD is the only choice. It also has more threads (32 vs 20) and a larger L3 cache, which could theoretically help in certain multi-threaded scenarios, but the benchmarks do not show that benefit.

For anyone building a desktop system focused on general performance, rendering, or single-thread responsiveness, the Intel Core Ultra 7 265KF is the clear pick. For a rack server that needs ECC memory and does heavy integer math, the AMD EPYC 4545P has a specific, narrow role. The database places the Intel at the 94th percentile of all CPUs and the AMD at the 95th, but the head-to-head data shows the Intel wins the majority of workloads. The Intel's average benchmark score is 71910, while the AMD's is 75373, a 4.8% gap that reflects the AMD's single integer win, but the Intel's dominance across 16 other tests is the more reliable indicator for most workloads.